@@ -248,6 +248,8 @@ iwl_fw_error_next_data(struct iwl_fw_error_dump_data *data)
* command response or a notification.
* @FW_DB_TRIGGER_RESERVED: reserved
* @FW_DBG_TRIGGER_STATS: trigger log collection upon statistics threshold.
+ * @FW_DBG_TRIGGER_RSSI: trigger log collection when the rssi of the beacon
+ * goes below a threshold.
*/
enum iwl_fw_dbg_trigger {
FW_DBG_TRIGGER_INVALID = 0,
@@ -258,6 +260,7 @@ enum iwl_fw_dbg_trigger {
FW_DBG_TRIGGER_FW_NOTIF,
FW_DB_TRIGGER_RESERVED,
FW_DBG_TRIGGER_STATS,
+ FW_DBG_TRIGGER_RSSI,
/* must be last */
FW_DBG_TRIGGER_MAX,
@@ -566,6 +566,14 @@ struct iwl_fw_dbg_trigger_stats {
} __packed;
/**
+ * struct iwl_fw_dbg_trigger_low_rssi - trigger for low beacon RSSI
+ * @rssi: RSSI value to trigger at
+ */
+struct iwl_fw_dbg_trigger_low_rssi {
+ __le32 rssi;
+} __packed;
+
+/**
* struct iwl_fw_dbg_conf_tlv - a TLV that describes a debug configuration.
* @id: conf id
* @usniffer: should the uSniffer image be used
@@ -345,6 +345,25 @@ int iwl_mvm_rx_rx_mpdu(struct iwl_mvm *mvm, struct iwl_rx_cmd_buffer *rxb,
struct iwl_mvm_sta *mvmsta;
mvmsta = iwl_mvm_sta_from_mac80211(sta);
rs_update_last_rssi(mvm, &mvmsta->lq_sta, rx_status);
+
+ if (iwl_fw_dbg_trigger_enabled(mvm->fw, FW_DBG_TRIGGER_RSSI) &&
+ ieee80211_is_beacon(hdr->frame_control)) {
+ struct iwl_fw_dbg_trigger_tlv *trig;
+ struct iwl_fw_dbg_trigger_low_rssi *rssi_trig;
+ bool trig_check;
+ s32 rssi;
+
+ trig = iwl_fw_dbg_get_trigger(mvm->fw,
+ FW_DBG_TRIGGER_RSSI);
+ rssi_trig = (void *)trig->data;
+ rssi = le32_to_cpu(rssi_trig->rssi);
+
+ trig_check =
+ iwl_fw_dbg_trigger_check_stop(mvm, mvmsta->vif,
+ trig);
+ if (trig_check && rx_status->signal < rssi)
+ iwl_mvm_fw_dbg_collect_trig(mvm, trig, NULL, 0);
+ }
}
rcu_read_unlock();
Lots of issues can be caught when the RSSI drops. Add the ability to collect the firmware data at that point. Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com> --- drivers/net/wireless/iwlwifi/iwl-fw-error-dump.h | 3 +++ drivers/net/wireless/iwlwifi/iwl-fw-file.h | 8 ++++++++ drivers/net/wireless/iwlwifi/mvm/rx.c | 19 +++++++++++++++++++ 3 files changed, 30 insertions(+)